This is plugin takes care of loading the jQuery core and default plugins and
performs any initialization steps specific to Foswiki, For instance, it reads
all <meta> tags from the html head as they have been set by Foswiki and
constructs the foswiki javascript object to be used by other javascript
plugins.

In addition it adds some basic Foswiki tags to make life easier using jQuery
plugins, most notably %JQREQUIRE{"pluginName"}% to load a subsequent
jQuery plugin and all of its dependencies, taking care where and how it
is added to the html page.